Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Jia, Xuefeng, once mentioned the application of 138-41-0, Name is Carzenide, molecular formula is C7H7NO4S, molecular weight is 201.2, MDL number is MFCD00007938, category is amides-buliding-blocks. Now introduce a scientific discovery about this category, Name: Carzenide.
Preparation of novel auxinic herbicide derivatives with high-activity and low-volatility by me-too method
New auxinic herbicide derivatives with high-activity and low-volatility are required urgently to solve the growing problems of weed resistance and volatile drifting which severely limit the application of auxinic herbicides (2,4-D, MCPA and dicamba). In this study, a series of auxinic herbicide derivatives were prepared using 2,4-D, MCPA and dicamba as lead compounds by me-too method. The volatility, greenhouse herbicidal activity against four common weeds and field herbicidal activity were evaluated and a comparative analysis with the corresponding lead compound was made. Results of volatility test indicated that it was possible to get a low-volatile compound even when the reactants were both highly volatile and the compounds with intermolecular hydrogen bond showed the comparatively low volatility. In the greenhouse herbicidal activity test, the compounds with ester bond had faster and higher herbicidal activities and better inhibition phenotypes than the compounds with amide bond. The compounds (R)-ethyl 2-(4-(2-(2,4-dichlorophenoxy)acetoxy)phenoxy)propanoate (3a-9), (R)-ethyl 2-(4-(2-(4-chloro-2-methylphenoxy)acetoxy) phenoxy)propanoate (3a-18) and (R)-4-((1-ethoxy-1-oxopropan-2-yl)oxy)phenyl 3,6-dichloro-2-methoxybenzoate (3b-7) showed lower volatilities and faster and higher activities in the greenhouse and field test than the corresponding lead compound and could be potential herbicides for further development. (C) 2016 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
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